Live Razor Page Samples

using Microsoft.AspNetCore.Mvc;
using Microsoft.AspNetCore.Mvc.RazorPages;

namespace Website.Pages.Support.Samples.RazorPages.Reporting
{
    public partial class ExcelReportPictureModel : PageModel
    {
        public FileResult OnGet()
        {
            // Create a new empty workbook and get the first sheet. 
            SpreadsheetGear.IWorkbook workbook = SpreadsheetGear.Factory.GetWorkbook();
            SpreadsheetGear.IWorksheet worksheet = workbook.Worksheets["Sheet1"];

            // Get the width and height of the picture in pixels and convert to
            // points for use in the call to AddPicture.  This step is only
            // necessary if the actual picture size is to be used and that size
            // is unknown.  Another option is to calculate the width and height 
            // in row and column coordinates in the same manner as left and top below.
            double width;
            double height;
            System.Drawing.Image image = System.Drawing.Image.FromStream(INTERNAL_GetSupportingFileStream("sg-banner.png"));
            System.Drawing.Image image = System.Drawing.Image.FromFile("files/ssgear.gif");
            using (image)
            {
                width = image.Width * 72.0 / image.HorizontalResolution;
                height = image.Height * 72.0 / image.VerticalResolution;
            }

            // Calculate the left and top placement of the picture by converting 
            // row and column coordinates to points.  Use fractional values to 
            // get coordinates anywhere in between row and column boundaries.
            SpreadsheetGear.IWorksheetWindowInfo windowInfo = worksheet.WindowInfo;
            double left = windowInfo.ColumnToPoints(1.5);
            double top = windowInfo.RowToPoints(1.5);

            // Add the picture from file.
            worksheet.Shapes.AddPicture(INTERNAL_GetSupportingFileBytes("sg-banner.png"), left, top, width, height);
            //worksheet.Shapes.AddPicture(imageFile, left, top, width, height);

            // Save workbook to stream using the Open XML (*.xlsx) file format compatible with Excel 2007 and later.
            System.IO.Stream workbookStream = workbook.SaveToStream(SpreadsheetGear.FileFormat.OpenXMLWorkbook);

            // Reset position to the beginning of the stream.
            workbookStream.Seek(0, System.IO.SeekOrigin.Begin);

            // Stream the Excel workbook to the client.
            var contentType = "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet";
            var fileName = "SpreadsheetGear-Sample-ExcelReportPicture.xlsx";
            return File(workbookStream, contentType, fileName);
        }
    }
}